Are all progression trees similar in design between all factions?

The basic rules of progressing through the trees are the same, but each faction’s tree is structurally quite different. Under our current direction the Space Marines have a fairly rigid, hierarchical tree, while the Chaos one winds about in circles and has multiple paths to the same point. The Eldar have very distinct clusters to represent the big differences between the Aspect Warriors, and the Orks have a wide spread of options available to them at any point.